Uneven, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Uneven, Gems, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).